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Start Over Author "Han, J L" Journal journal of applied polymer science
10 results on '"Han, J L"'

9. Kinetic study of the urethane and urea reactions of isophorone diisocyanate.

Author

Han, J. L., Yu, C. H., Lin, Y. H., and Hsieh, K. H.

Subjects
URETHANE, UREA, DYNAMICS, ISOCYANATES, ALCOHOL
Abstract

The article discusses results of a study that evaluates the catalyzed urethane reactions of alcohols and isophorone diisocyanate (IPDI) and urea reactions of isocyanate-terminated prepolymer. The catalysts for the urethane and urea reactions are cited. The study showed the second-order kinetics followed by the catalyzed isocyanate/alcohol and isocyanate/water reactions during their initial stages.

Published
2008
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10. Interpenetrating polymer networks of bismaleimide and polyether polyurethane–crosslinked epoxy

Author

Han, J. L. and Li, K. Y.

Abstract

In this work, we prepared the interpenetrating polymer networks of bismaleimide and polyether-type polyurethane(polyoxypropylene)–crosslinked epoxy (BMI/PU(PPG)–EP IPNs) by employing the simultaneous bulk polymerization technique. The polyurethane (PU)–crosslinked epoxy was identified via infrared (IR) spectra analysis. Also investigated herein were the mechanical properties, including tensile strength, Izod impact strength, and fracture energy (GIC) of the IPNs with various BMI contents in PU–crosslinked epoxy matrix. In addition, differential scanning calorimetry (DSC) analysis and the thermogravimetric analysis (TGA) were performed to examine the thermal properties of the BMI/PU(PPG)–EP IPNs. In addition, morphology and dynamic mechanical analysis (DMA) of the BMI/PU(PPG)–EP IPNs were also studied. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 70: 2635–2645, 1998

Published
1998
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